Imagine a scenario where extraterrestrials arrive on Earth, asserting themselves as Supreme Deities. This hypothetical situation presents unprecedented challenges and ethical dilemmas. As the man with the dubious plan, I will be your guide into the considerations and actions that the entire planet should contemplate if faced with such a profound encounter.

1. Approach with Caution: As humanity, the paramount response is cautious curiosity. Engage in a dialogue while also acknowledging the need to verify their claims.

2. Seek Expert Insight: Consult theologians, scientists, and ethicists to analyze the situation from various perspectives.

3. Preserve Autonomy: Humanity’s sovereignty remains crucial. Engage with the extraterrestrials while safeguarding our own autonomy.

4. Verify Claims: Demand evidence to substantiate their assertion as Supreme Deities.

5. Engage in Ethical Discussions: Convene global dialogues to explore the implications of their claim on faith, philosophy, and morality.

6. Establish Boundaries: Set boundaries regarding interactions and their potential influence on our way of life.

7. Promote Cultural Exchange: Share our unique history, beliefs, and values while learning about their civilization.

8. Foster Mutual Understanding: Facilitate language and cultural understanding to enhance meaningful exchanges.

9. Collaborate for Peace: Work toward peaceful coexistence while addressing potential conflicts.

10. Preserve Human Values: While engaging with the extraterrestrials, ensure the preservation of our core human values.

11. Maintain Skepticism: Maintain a critical mindset while assessing their claims and intentions.

12. Ethical and Moral Scrutiny: Evaluate the extraterrestrials’ teachings against universal principles of ethics and morality.

13. Scientific Scrutiny: Employ scientific methods to investigate their technology and origins.

14. Encourage Transparency: Urge the extraterrestrials to be transparent about their intentions and technology.

15. Prepare for Unforeseen Outcomes: Anticipate the potential societal, cultural, and psychological shifts.

16. Collaborate with Global Authorities: Governments, international organizations, and scholars should work collectively to ensure a coherent response.

17. Respect Diversity: Embrace the diversity of human perspectives while navigating this monumental event.

18. Preserve Humanity’s Essence: Above all, ensure that interactions with extraterrestrial beings align with the core essence of humanity.

In this unprecedented scenario, humanity’s approach should be one of curiosity, caution, and ethical consideration. Balancing skepticism with open-mindedness, while preserving our values and autonomy, will be paramount. Such an encounter would not only test our beliefs and knowledge but also provide an opportunity to unite as a species and redefine our place in the cosmos.